HIGHROCK 2.4GH Wireless USB PowerPoint PPT Presenter pen Environmentally friendly ABS plastics; Scientific ergonomic design; A plug-and-play wireless receiver; 2 x AAA Battery Not Included; Buttons: laser pointer, page up, page down, launch slide show, black screen; About laser pointer: hold down the button to keep the laser on A bright red laser pointer that's easy to see against most backgrounds, highlight key areas of your slides Wireless remote control distance range of up to 39-foot , so you can free to move around the room and interact with your audience Support options: Supports MS Word, Excel, PowerPoint, ACD See, website, iWork (Keynote & Numbers & Pages) etc; For MacBook on OS, plug the usb receiver into laptop, it will come out a box, and then you can select 101or104 option